JPS6332042Y2 - - Google Patents

Description

[Detailed explanation of the invention] This invention is designed to prevent the crossing bar from falling when a car on the road side or the track side begins to descend or passes through the crossing bar which is already in a horizontal state at a railroad crossing where arm-type level crossing barriers are installed. For arm-type railroad crossing barriers that push up diagonally to prevent breakage of the barrier, the barrier is abnormally pushed upwards, or while it is rising, or falls to the side of the track. The present invention relates to a blocking rod return device for a crossbar-type level crossing barrier that allows the blocking rod to be quickly returned to its original state.

In a device for preventing breakage of the breakage of a block-type level crossing barrier, the breakage of the breakage is prevented by rising diagonally when pressed by a vehicle, etc. on the track side or the road side of the level crossing. If the cutoff rod is pushed upward significantly by a truck or trailer, or if the cutoff stick that is in the middle of rising falls onto the track side due to reckless driving of a car, etc., and after the pressure is released, the return spring becomes excessively stretched. In some cases, it becomes difficult or impossible to return to the original state, and in such cases, the barrier rod cannot function as a railroad crossing barrier.
It is difficult to avoid the risk of a level crossing accident occurring. Therefore, this idea was developed with the intention of correcting the above-mentioned problem.When the cut-off rod, which is integrally attached to the movable plate, rises abnormally or falls to the side of the track, the curved part attached to the fixed plate An object of the present invention is to provide a blocking rod return device for a arm-type level crossing breaker that can always perform the function of a blocking rod in a level crossing breaker by quickly returning the blocking rod to its original horizontal state using a leaf spring. It is something.

An embodiment of this invention will be described below with reference to the drawings. A holder (not shown) containing a decelerator
A substantially triangular-shaped fixing plate 2 is attached to the front end of the fixing tube 1 (the right side is the front and the left side is the rear in FIGS. 1 and 2), which is inserted and fastened into the frame and rotates approximately 90 degrees upward from the horizontal position. At the center of a support 3 whose lower part is fixed by means such as welding, whose front end is welded and integrated with the rear surface of the fixed plate 2 and which covers the front of the fixed cylinder 1,
Set up a trapezoidal standing plate 4, stand it upright, and set this standing plate 4.
The lower surface of
They are integrally welded to the rear surface in the vertical direction at the center of the fixed plate 2. In addition, a stopper 7 is welded and integrated with the front end of the traction rod 6, which has a threaded part a that penetrates and screws into the receiving plate 5 housed inside the rear of the fixed cylinder 1, and a U-shaped welded to the front end of the stopper 7. A suitable number of links 9 are movably connected to the front end of the locking piece 8, and these links 9 are passed through the through hole C of the fixed plate 2, and a U-shaped locking piece 10 is connected to the front end. The tip of the return spring 11 is passed through and fixed to a substantially triangular movable plate 15 (to be described later), and the return spring 11, which is stretched between the fixed plate 2 and the receiving plate 5 inside the fixed cylinder 1, is always connected to the rear ( The movable plate 15 is held in close contact with the fixed plate 2, thereby preventing unnecessary swinging. Also, the side edge near the apex of the fixed plate 2 (right side edge in Fig. 4)
A substantially U-shaped holder 12 from which long and short brackets 13 and 14 can be protruded is fixed to the holding body 12, and through holes 13' and 12 formed in each of these brackets 13 and 14 are fixed.
14', a support shaft P ₁₀ is inserted and fixed, a T-shaped support joint S 1 (described later) is rotatably covered and fitted onto the support shaft P ₁₀ , and the support joint S ₁ is integrally mounted above the support joint S ₁ . A support joint S ₂ (described later) is attached to the protruding bulge e ₂ .
At the same time, attach the bulging piece e ₃ that can integrally protrude upward, and attach the support joint S ₂ to the support shaft P ₂₀ that can protrude perpendicularly downward to the side (left side in Fig. 6) together with the support joint S ₁ . The movable plate 15 can be rotatably covered and fitted, and the movable plate ₁₅ can be rotated to the right (for example, toward the road) about the spindle P ₁₀ in FIG. It is possible.
A bulging piece e1 to be joined to the bracket ₁₃ is integrally formed on the support joint _S1 so as to be orthogonal to _the bulging piece _e2 , and pin holes i, u ₁ and pin holes u ₂ and u ₃ are formed in the bulging pieces e ₂ and e ₃ , respectively, and a protective pin R 1 is provided in these pin holes i and u ₁ , and a protective pin R ₁ is formed in the pin holes u ₂ and u _3. A protection pin P ₂ is inserted and fixed in each of the holes, and these protection pins P ₁ and P ₂ are preferably made of brass, and a cutoff rod 17 (described later) is pressed from the road side to the track side (left side in Fig. 4). When this occurs, the movable plate 15 is not operated until the protection pin _P2 is sheared by the support joint _S2 . A cylindrical support joint S ₂ is integrally protruded and formed on the side edge near the apex of the movable plate 15 (the left edge in FIG. 4), and the bulging piece of this support joint S ₂
The bulging piece _{e 1} of the support joint S 1 (right side in Fig. ₄ ) connects the bulging piece e 2 to be joined to e _{3 with the protective pin P 2 ,} and forms _{the bulging piece e 2 integrally} . and the bracket 13 are connected by a protective pin _P1 , and these support joints _S2 and _S1 are connected to the movable plate 1 as shown in FIG.
The movable plate 15 itself is rotated and raised in either the left or right direction with respect to the fixed plate 2 (usually diagonally 45 degree direction) is possible. Further, guide pieces g ₂ and g ₁ used when the movable plate 15 rotates to the left or right are fixed to both ends of the bottom edge 2' of the fixed plate 2.

Rollers r ₁ and r 2 are rotatably supported by U-shaped support pieces f ₁ and f ₂ fixed between the left and right edges (in FIG. 4) of the fixed plate ₂ , respectively, The recesses n 1 and n 2 of the horizontal arms h ₁ and h ₂ of the stickers K ₁ and _K 2 which are pivotally connected to the left and right support shafts d _{1 and d 2 of} the fixing plate 2, respectively (in Fig. 2, the recesses of the stickers K ₂ n ₂ and a convex portion n ₄ (described later)) are normally fitted into the concave portions n 1 , n ₂ of these horizontal arms h ₁ , h ₂ toward the tips of the convex portions _{n 3 ,} n ₄ , and on the other hand, Stetsker K ₁ ,
Stretched between the upper end of K ₂ and the middle of the fixing plate 2.
A blocking rod 17 is attached to the movable plate 15, which constantly springs and biases the locked coil-shaped buffer spring 16 toward the upright arms v ₁ and v ₂ (only v ₂ is shown in the drawing).
should not operate below a certain pressing force. Therefore, when the blocking rod 17 is pressed and raised, the roller r ₂ (or r ₁ ) moves to the sticker K ₂ (or
_K1 ) is pushed open, but the resistance of the buffer spring 16 suppresses the sudden movement of the movable plate 15, and the blocking rod 17 descends and returns to the position where the roller _r2 (or _r1 )
When it comes into contact with the stick car K ₂ (or K ₁ ), it presses and lowers the convex part n ₄ (or n ₃ ) at the tip, while the concave part
n ₂ (or n ₁ ), but at this time, due to the resistance of the buffer spring 16, the movable plate 15 can return without receiving a sudden impact. A shielding rod covering 18 having a substantially U-shaped cross section is welded to approximately the center of the front surface of the movable plate 15.
The rear end of the cutoff rod 17 whose rear portion is covered and fitted to the inner peripheral surface of the cutoff rod cover 18 is brought into contact with the movable plate 15, and the cutoff rod cover 18 and the cutoff rod 17 are integrated with the U bolt 19. It is attached to the movable plate 15.
Further, support shafts y 1 and y 2 are horizontally mounted and fixed to a pair of protruding pieces q _{1 and} q ₂ that are fixed and protruded below the movable plate 15, and these support shafts y ₁ and _{y 2 are} swingable, respectively. When the blocking rod 17 rises by a predetermined angle (usually about 70 degrees) from the horizontal position, the engaging portion 20 below the suspended rockers L ₁ and L ₂ engages with the bottom edge 2' of the fixed plate 2. Initially, when the blocking rod 17 is completely upright, it engages with the bottom edge 2', and the blocking rod 17 becomes integral with the fixed plate 2, becoming locked, and the blocking rod 17
It is designed so that it will not swing due to inertia, wind pressure, etc. when it stands upright (when the railroad crossing is opened), and the sloped part 21 at the rear of the lower part of the engaging part 20 (see Fig. 1)
The shielding rod 17 is configured to be able to easily pass through the bottom edge 2' of the fixed plate 2 when the pressure is released after the shielding rod 17 is tilted diagonally upward. In addition, when the cutoff rod 17 is pushed significantly upward by a tall truck or trailer, or when the cutoff rod 17 is in the middle of rising,
In order to prevent the vehicle from driving recklessly, etc., from its normal position when raised to an overturned position leaning toward the track side, as shown in Figure 10, the shutoff rod 1 is
Leaf springs T ₁ and T ₂ for returning 7 to the original position
The roots of the plate springs T 1 and T 2 are fixed to the middle of the left and right side edges (in Fig. 4) of the fixed plate 2 with fasteners j such as bolts and nuts, and these leaf springs T ₁ and T ₂ are attached to the free ends from the roots. An arc-shaped curved portion 22 that is tapered toward the end and reverses and bends from concave to convex with respect to the upper surface of the blocking rod 17 near the free end (see Fig. 3).
, and the upper surface of the shielding rod cover 18 is in contact with the curved portion 22 . In the figure, 23 is a reinforcing rib for the shielding rod cover 18, 24 is a rail, and 25 is a railroad crossing board.

Since this device has the above-mentioned configuration, when the cutoff rod 17 performs normal vertical movement parallel to the rail laying surface without receiving external force, the fixed cylinder 1, fixed plate 2, and movable plate are 15 and blocking rod 1
7 operates in an integrated manner to open and close a level crossing (not shown), which is exactly the same as in the case of conventional arm-type crossing gates. or from the road side to the track side) and is already in a horizontal state.
7 toward the road side (or the railroad track side), the blocking rod 17 is forcibly moved upward to the right (or left) in FIG. is rotated about a support shaft P ₁₀ (or P ₂₀ ) fixed on the fixed plate 2 side, and is removed from the front surface of the fixed plate 2 diagonally upward. However, if the blocking rod 17 is pressed to an abnormal height by a tall truck, trailer, etc., and after that pressure is released, the restoring force of the return spring 11 will be insufficient, and it will quickly return to its original state. 10), the upper surface of the blocking rod cover 18 is brought into contact with the arc-shaped curved portion 22 of the leaf spring T ₁ (or T ₂ ) fixed to the fixed plate 2. In addition, when the cutoff rod 17, which is in the middle of rising, is pushed toward the track side by a car or the like driving recklessly and falls to the - overturning position, the cutoff rod cover 18 is caused to fall on the curved portion 22 of the leaf spring _T2 . When the upper surface comes into contact, the blocking rod 17 quickly returns to its original state (the - position in Figure 10) due to the elastic force of the leaf spring _T1 or _T2 itself, blocking the level crossing and preventing a collision. It is possible to prevent unexpected disasters such as

According to this invention, the roots of a pair of leaf springs are attached to the left and right side edges of a substantially triangular fixed plate that is equipped with a substantially triangular movable plate with a blocking rod attached so as to be tiltable to either the left or right side. These leaf springs are fixed, have arcuate curved parts near their respective free ends, and are tapered toward the free ends, so that the cutoff rod, which is integrally attached to the movable plate, has a short length. When being pushed to an abnormal height by a high truck or trailer, or when a rising cutoff rod is pushed or overturned by a recklessly driving car, etc., the restoring force within the fixed cylinder is insufficient. The upper surface of the barrier cover of the barrier in conventional arm-type level crossing barriers, where there was a high risk that the barrier would remain in the raised position when returning to its original state was extremely delayed or difficult. By pressing with the arc-shaped curved part of the leaf spring, the barrier rod can quickly return to its original state, thereby functioning as a barrier, preventing disasters at the railroad crossing of the barrier rod, and Since the arc-shaped curved portion of the leaf spring presses against the shielding rod cover, there is no risk of damage or damage to the shielding rod itself, and the pressing operation by the leaf spring can be performed reliably and easily. It is easy to install because all you have to do is fix the base of the leaf spring, and it can also be attached to the fixed plate of an existing arm-type level crossing barrier, so it is useful for improving the functionality of conventional arm-type railroad crossing barriers. It has practical benefits.

[Brief explanation of the drawing]

The drawings show one embodiment of this invention. Figure 1 is a front view of the main part with the leaf spring omitted, Figure 2 is a plan view of the entire upper main part, and Figure 3 is a front view of the main part when the right side of the fixing plate is horizontal. Figure 4 is a sectional view taken along the - line in Figure 1, Figure 5 is a view taken along the - line in Figure 1 of the fixing plate, and Figure 6 is a sectional view taken along the - line in Figure 1.
Fig. 7 is an exploded perspective view of the support joint portion, Fig. 8 is a diagram of the connection state between the fixed cylinder and the fixed plate, Fig. 9 is an enlarged sectional view of the L portion of Fig. 2, FIG. 10 is an explanatory diagram when the blocking rod falls toward the railroad track. 2... Fixed plate, 15... Movable plate, 17... Shutoff rod, 22... Curved portion, T ₁ , T ₂ ... Leaf spring, 18
...Shutoff rod covering.

Claims (1)

[Scope of utility model registration request] A substantially triangular fixed plate having a substantially triangular movable plate attached with a blocking rod so as to be tiltable to either the left or right side has an arc-shaped curved portion near the free end on each side edge of the substantially triangular fixed plate; The roots of a pair of leaf springs tapered toward the free end are fixed, and when the cutoff rod rises abnormally or falls toward the track, the upper surface of the cutoff rod cover is pressed by the curved portion, and the cutoff rod is closed. This is a blocking rod return device for arm-type level crossing barriers that can be returned to its original state.